Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology
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Ann. Allergy Asthma Immunol. · Dec 1998
Emergency room visits of asthmatic children, relation to air pollution, weather, and airborne allergens.
The worldwide increase in the incidence, prevalence, and severity of asthma may suggest that environmental factors play a role in these epidemiologic changes. ⋯ The major factors found to be associated with ER visits of asthmatic children were high NOx, high SO2, and high barometric pressure. Negative correlation was found between ER visits of asthmatic children and ozone concentrations. The particularly high number of ER visits at the beginning of the school year and the Jewish holidays was probably associated with an increase in the number of viral infections and/or emotional stress.